Add automatic MCP Server exposure capability to MCP Agent

[kevoconnell]

Currently, MCP Agent provides a framework for connecting to and consuming MCP servers, but doesn't itself expose an MCP server interface without additional configuration

for me personally: most of my use cases revolve around cases where I won't be writing in python (probably TS or Swift) and would love a flow like:

1.) TS or swift client calls mcp-agent

2.) mcp-agent does xyz flow, maybe installs mcp servers to make the flow work

3.) mcp-agent streams updates and completions to TS or swift client

I think this would be something like this (maybe wrong though)

src/mcp_agent/app.py:

• Add a expose_as_server parameter to the MCPApp constructor with a default value of True, if true run the server

src/mcp_agent/mcp/mcp_agent_server.py:

• Enhance to support automatic registration of agent capabilities as tools

• Add support for stdio and HTTP/SSE protocols

src/mcp_agent/config.py:

• add settings for server exposure (i.e port etc)

src/mcp_agent/mcp_server_registry.py:

• Update to support self-registration of agent servers

• Add functionality to track and manage agent-exposed servers